that we have not seen -- well no former pope has ever resigned and been driven out of vatican city. it was 600 years ago the last time that someone voluntarily gave this up position and so much has been said about this choice. initially there was even criticism that, you know, a pope should not step down, this pope has shown what many regard as tremendous humility in his decision to resort to prayer and to meditation, and to go up to the mountain, as he says, god has called him to do, to spend the rest of his life in contemplation and in prayer, and there he goes, bill. bill: there is a schedule that we've been given and they are sticking to the minute. he will now depart by way of helicopter, and then it's 5:00 in the afternoon in italy, and around 2:00 our time, once he is south of rome, the doors of the palat pa palatso will close and the guards go off-duty because their service protect being the head of the catholic church will be over, at least for the time being. this is going to play out now and over the next three hours as we watch the images come in. martha: there are few